Cutter mechanism for sheet-folding and other machines.



PATENTED AUG. 13, 1907.

, o.. A. STURTEVANT'. GUTTER MEGHANISM ENE SHEET HOLDING AND OTHERMACHINES.

.A PPLIOATION HLED AUG.31. 1905.

by gufi/b No. 863,007. PATENTED AUG. 13, 1907.

C. A. STURTEVANT. CUTTER MECHANISM FOR SHEET FOLDING AND OTHER MACHINES.

APPLICATION FILED AUG.31. 1905.

l v /N I n UNITED STATES PATENT OFFICE.

CHARLES A. STURTEVANT, OF PLAINFIELD, -NEW JERSEY, ASSIGNOR TO E. C.FULLER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CUTTER MECHANISM FOR SHEET-FOLDING AND OTHER MACHINES.

Specification of Letters Patent.

Patented Aug'. 13, 1907.

Application sled August 31,1905. serai No. 276,548.

cutter mechanism for this purpose which is simple ineonstruction andeffective in operation and which can be readily adjusted for cutting thesheets into sections of different widths.

In the accompanying drawings consisting of two sheets; Figure l is afragmentary top plan view of a folding machine equipped with my improvedcutter mechanism. Fig. 2 is a vertical longitudinal section of the sametaken in line 2 2, Fig. l. Figs. 3 and 4 are vertical transversesections taken in lines 3 3 and 4 1, Fig. l respectively. Fig. 5 is afragmentary loni gitudinal sectional elevation in line 5 5, Fig. l. Fig.G is a fragmentary horizontal section in line 6 6 Fig. 5 showing themeans for adjustably securing a cuttert to the main frame. Fig. 7 is afragmentary View showing the detachable handle of the cutter adjustingmechanism.

Similar letters of reference indicate corresponding parts throughout theseveral views.

The main frame of the machine may be of any suitable construction thatshown in the drawings consisting of two vertical standards or end piecesA A1, and two longitudinal rods or bars a al, arranged parallel andhorizontally one above the other and connecting the end pieces. Abovethe longitudinal bars are arranged two shafts B B1 which are arrangedhorizontally side by side and which are journaled in suitable bearingson the standards of the frame. The front shaft B has rigidly securedthereto a front roller C which is continuous throughout its length andwhich coperates with a roller on the rear shaft B1 which is composed ofsections D Dl D2. These rollers preferably serve as part of themechanism wherebythe sheet which is to be divided is also folded orotherwise operated upon. The sheet to be folded and slitted is fed downbetween the opposing rollers B B1 by any suitable means and carriedunderneath the rear roller sections to the devices which subsequentlyoperate upon the same by means of tapes E passing over the front rollerand underneath the sections of the rear roller.

The two shafts are caused to rotate in unison by means of intermeshinggear wheels f f secured to corresponding ends thereof and the same areoperatively ,and a set screw gl or by any other means but the endsections Dl D2 which are mounted upon the rear shaft on opposite sidesof the central section, are compelled to turn with the shaft but arecapable of longitudinal movement thereon. This is preferably 4effectedby constructing the ends of the key g in the form of splines or feathersand extending the same into longitudinal ways or grooves in the bore ofthe end sections, as shown in Figs. l, 2 and 5, thereby forming splinedor feathered connections between the rear shaft and the end sections ofthe rear roller.

Various means may be employed for adjusting the end sections of the rearroller lengthwise on the rear shaft. The means for this purpose shown inthe drawings are constructed as follows:

H Hl represent bushings which are secured in the outer ends of the endroller sections by a driving fit or otherwise and each of which isprovided with an annular groove h in its periphery.

I I1 represent two yokes or slides which are mounted on the upperhorizontal baraso as to be movable lengthwise thereon and 'each of whichis provided at its upper end with a fork i whichengages with the grooveof one of said bushings. On the rear sides of these yokes or slides thesame are provided with laterally projecting arms il each of whichcarries a screw nut j at its rear end the axis of which is parallel tothe supporting bars a a1 and the rear shaft.

K K1 represent two adjusting screws which are arranged horizontally sideby side and parallel to the supporting bars and rear shaft. These screwshave their inner or rear ends screw threaded and one of them k iscomparatively short and engages its screw threaded rear end with thescrew nut of the front slide I while the other c engages its screwthreaded rear end with the screw nut of the rear slide I1 this beingpossible by making the arm il of the rear slide somewhat longer than thefront slide, as shown in Fig. l. The front or outer ends of theadjusting screws extend to the outer side of the frame standard A andthe same are held against lengthwise movement but are capable ofrotating freely. This is effected by j ournalingthe front portions ofthese screws in bearings Z Z formed on a bracket L which is secured tothe stan dard A and arranging shoulders or collars m m1 on said screwson opposite sides of their bearings. Upon turning the screws in onedirection or the other the slides connected therewith are caused to movelengthwise of the screws and the respective roller sections are causedto move lengthwise on the rear shaft owing to the slides and bushingswhich connect these parts.

on which the cutter can move lengthwise.

The adjustment of each screw maybe. effected in any suitable manner butpreferably by means of a handle N, having its hub n cmistrueted to [itover the outer end of the screw and provided with notches nl whichreceive a transversel piu n2 at theouter end of each screw. By thismeans the -handle can be readily attached to a screw when required andremoved therefrom when not in use so that there is no unnecessaryprojection from that part of the machine after the same has been set.

After adjustment the screws are held against turning so as to avoidaccidental displacement of the end roller sections D1 D2 by splittingthe bearings Z l thereof and connecting the split portions of the sameby means of a clamping screw o.

The central section of the rear roller is provided midway in itsperiphery'with a single circumferential or 'annular groove jo but eachof the end sections of this roller is provided with a plurality of suchgrooves which are preferably arranged equidistant, as shown at p1 Figs.l, 2 and 5.

Q Ql Q2 represent rotary cutters which coperate with the sections of therear roller for severing the sheet which passes between the same into aplurality of sections. Each of these cutters is constructed as follows:

q represents an annular cutter blade or ring arranged underneath one ofthe roller sections and projecting with the upper part of its peripheralcutting edge into a groove of said roller section. This cutter blade isarrangedbetween two supporting rings r r the bore of which is of thesame diameter as that of the cutter blade but the periphery thereof isof smaller diameter than the cutter blade so as to leave the peripheralor cutting edge of the blade projecting beyond the supporting rings andform shoulders on opposite sides of said cutter blade which engages withthe roiler section on opposite sides of the groove with which the cutterblade engages. The blade together with the supporting rings is mountedon the periphery of a hub S and is confined thereon against axialmovement by means of a rigid fiange or shoulder s formed on the hub andbearing against one of thesupporting rings and a detachable annularshoulder or disk s1 which bears against the other supporting ring and isconnected with the hub by means of screws t or otherwise. This hub isjournaled upon a `bearing sleeve or bushing u which is arrangedhorizontally or parallel to the rear shaft and is of a length greaterthan that ol the cutter hub so to form an elongated bearing This bushingor sleeve is in turn journaled upon a horizontal arbor e which issecured at one end to the upper end of a supporting bracket V preferablyby screwing the respectivey end of said arbor into a threaded opening insaid bracket, shown in Fig. 5. One end of the bearing sleeve u bearsagainst the bracket V while its opposite end bears against a disk orhead t" secured to the opposite end of the arbor by means of a screw e2whereby this sleeve or bushing is held against axial movement relativelyto the arbor and bracket.

The lower end of each of the brackets V is fitted in a vertical groove wformed in a clamping block W which is suitably recessed on its oppositeside to tit oue side of both frame bars, a a. A similar clamping block Wbut having no vertical groove w is fitted in like manner against 'theopposite side of said frame bars a a. These two clamping blocks arefastened against the than two sections.

opposite sides of the frame bars and the respective bracket V isadjustably s'ccured to the grooved clamping block by means of aclalnping bolt .t connecting said blocks between said bars and passingthrough a vertical slot y in said bracket, as shown in Figs. 4, 5 and 6.This connection between the bracket V and the frame permits the bracketand the parts mounted thereon to be adjusted toward and from the,adjacent rear roller section and also adjusted lengthwise thereof.

In setting up the machine a cutter of this description is placed withits blade or cutting ring into the groove of the central roller sectionand its bracket V is secured by means of the companion clamping blocksand screw to the adjacent part of the frame bars a al. cutter placed inthis position operates to divide the sheets centrally between its sideedges and is used exclusively when the sheet is to be divided into notmore When the sheet is to be cut into 4 sections two similar cutters arearranged on opposite sides of the central cutter and each fitted withits cutting blade into one of the grooves of the respective end rollersections and secured with its standard to the adjacent part of the framebars a al, as shown lin Figs. 1 and 2. The cutting blades of the sidecutters are engaged with those grooves of the end roller sections whichare nearest the line on which it is proposed to sever the sheets. Acoarse adjustment only of these side cutters is effected by this means.In order to effect a fine adjustment of the side cutters and place themexactly in register with the lines where the sheet is to be severed thescrews K Kl are turned in the proper direction for shifting the endroller sections on the rear shaft. During this movement of these rollersections the companion cutters are also moved axially on their bearingsby reason of the sides of the grooves containing the cutting bladesoperating as shoulders which engage the sides of the blades and causethem to move axially with the roller sections During this adjustingmovement of the side cutters the brackets V and the elongated bearingsthereof remain stationary whereby the tine adjustment is limited to thelength of these bearings.

When the sheet is to be cut into 3 sections the central cutter isomitted and the side cutters adjusted accordingly. I

Inasmuch as the central cutter and its coperating central roller sectionusually do not require any adjustment this cutter could be journaled ona fixed pivot. It is preferable, however, to construct this cutter inall respects like the side cutters which require to be adjusted as thisreduces the number of different parts which have to be made thuseffecting a saving in the cost of manufacturing the machine.

As the sheets pass downwardly between the front and rear rollers andbetween the latter and the cutter blades the same are severed into aplurality of sections according to the number and position of thecutters which are employed.

My improved cutter adjustment is not only very convenient as the samepermits of making the fine adjustment of the cutter while the machine isrunning and without the necessity of reaching into the inner part of themachine, but the same also effects a saving in time when get-ting themachine ready thus increas; ing the out put of the machine.

I claim as my invention:-

1. A cutter mechanism for sheet folding and other machines comprising ashaft, a roller splined on said shaft and having an annular groove inits periphery, an annular cutter projecting into said groove and capableof axial movement with said roller, a bushing securedio said roller andhaving an annular groove, a slide having :i fork which engages with thegroove of said bushing, an adjusting screw engaging at its threaded endwith a nut on said slide, a split bearing in which the opposite end ofsaid screw is journaled a clamping screw connecting the split parts ofsaid bearing, and collars or shoulders arranged on said screw onopposite sides of said bearing, substantially as set forth.

2. A cutter mechanism for sheet folding and other machines comprising ashaft, roller sections splined on said shaft and each provided with anannular groove, independent devices for adjusting said rollers axiallyon said shaft, cutter disks engaging with said grooves and eachadaptedvto be moved axially together with its companion roller solely byengagement of the sides of the respective groove with the sides of thedisk, substantially as set forth.

3. A cutter mechanism for sheet folding and other machines comprising ashaft, roller sections splined on said shaft and each provided with anannular groove, cutter blades projecting into said grooves and movablebodily with said sections, slides operatively connected with saidsections, and two adjusting screws which are arranged side by side andone of which is short and engages with a nut on one of said slides whilethe other is long and engages with a nut on the other slide,substantially as set forth.

4. A cutter mechanism for sheet folding and other machines comprising ashaft, roller sections splined on said shaft and each provided with anannular groove, cutter blades projecting into said grooves and movablebodily with said sections, slides operatively connected with saidsections, two adjusting screws arranged side by side and having theirfront ends adjacent to each other and one of which is short and engagesits threaded rear end with a nut on one of said slides while the otherscrew is long and engages its threaded rear end with a nut on the otherslide, and bearings in which the front ends of said screws are journaledbut held against axial movement, substantially as set forth.

-5. A cutter mechanism for sheet folding and other machines comprising ashaft, a roller composed of a central section which is flxeclon saidshaft and has an annular groove, and two end sections which are splinedon said shaft on opposite sides of said central section and each havingan annular groove, cutter blades projecting into said grooves, and meansfor adjusting said end sections and the companion cutter blades towardand from said central sections and its cutter blade, substantially asset forth.

6. A cutter mechanism for sheet folding and other machines comprising ashaft, a roller composed of a central section which is fixed on saidshaft and has an annular groove, and two end sections which are splinedon said shaft on opposite sides of said central section and each havingan annular groove, .cutter blades projecting into said grooves, andmeans for adjusting said end sections and the companion cutter bladestoward and from said central section and its cutter blade, comprisingslides operatively connected with said end sections and one slide havinga short. arm and the other a long arm, and adjusting screws which arearranged side by side and one of which is short and engages with a nuton said short arm while the other is long and engages with a nut on saidlong arm, substantially as set forth.

7. A cutter mechanism for sheet folding and other machines comprising alongitudinally movable roller having an annular groove, a rotary cutterhaving a blade projecting into said groove, a bushing upon which saidcutter is capable of sliding axially, an arbor upon which said bushingis mounted, a bracket supporting one end of said arbor and engaging withone end of said bushing, and a head secured to the opposite end of saidarbor and engaging with the opposite end of said bushing, substantiallyas set forth.

8. A cutter mechanism for sheet folding and other machines comprising alongitudinally movable roller having an annular groove, a rotary cutterhaving a blade projecting into said groove, a bearing on which saidcutter is mounted a bracket supporting said bearing, a pair ofsupporting rods, clamping blocks bearing against opposite sides of saidrods and one of them having a vertical guide groove which receives saidbracket, and a clamping bolt connecting said blocks and bracket andpassing through a vertical slot in the latter, substantially as setforth.

Witness my hand this 29 day of Aug., 1905.

CHARLES A. STURTEVANT. Witnesses:

E. E. BUSH, C. H. BIERLEIN.

